Immobile Pullet HELP!!!

[Butteryscotch]

I just called the chooks, and noticed that my 16 week old Australorp pullet was no where to be seen. Upon further inspection, I found her under a car, not moving, and breathing heavily.
I have given her some water and moved her somewhere warm.

Treatment? Diagnosis?

 

[Butteryscotch]

Her breath is raspy, and she is breathing still more heavily.